Manishtushu

Manishtushu (died 2255 BC) was King of the Akkadian Empire from 2270 BC to 2255 BC, succeeding Rimush and preceding Naram-Sin of Akkad.

Biography
Manishtushu was the second son of Sargon of Akkad and Tashlultum, and he succeeded his brother Rimush as King of the Akkadian Empire in 2270 BC. He continued his brother's campaign against Elam by a seaborne route, attacking Anshan and gaining access to the rich silver mines beyond Susa on the Iranian plateau, bringing much of the plunder back to Akkad. He died in 2255 BC, assassinated by members of his own court, and he was succeeded by his son Naram-Sin of Akkad.